Rules

Lutherville-Timonium Baseball Association (LTBA)

General Rules

  • League Structure and Eligibility
  • Age Grouping (Age Cutoff: Must be age for the league on April 30th)
League Name Age Range
Tee Ball Clinic 4 - 5 years old
Clinic 6 - 7 years old
8-Prep League 8 years old
9-10 League 9 - 10 years old
11-12 League 11 - 12 years old
13-16 League 13 - 16 years old
  • Team Assignment and Registration
  • Team Naming: Assigned by the Equipment Manager and Commissioner (using Major and Minor League Team names).
  • Player Assignment: Assigned by Commissioners with the goal of balanced talent and competition.
  • Registration: Proof of age is required prior to team assignment.
  • No Trading: Trading of players is not permitted.
  • Manager and Safety
  • Manager Eligibility: A Manager may manage only one in-house team (Clinic is exempt).
  • Player Safety Removal: If a player is deemed incapable of protecting themselves, the Manager reports it to the Commissioner. The Commissioner may remove the player and place them in the next lower age group.


  • Game Format and Scheduling
  • Field Dimensions
League Base Paths (feet) Pitcher's Plate to Home Plate (feet/inches)
8 - Prep 60 40
9 - 10 60 46
11 - 12 70 48
13 - 16 80 54
  • Game Length and Curfew
  • Length
  • 8-prep - 5 innings
  • 9-10 & 11-12 - 6 innings
  • 13-16 - 7 innings
  • Official Game All Leagues - 4 full innings (3.5 if home team leads)
  • Run Limit (Six-Run Rule)
  • A half-inning is completed when the defensive team records three outs OR the offensive team scores six runs.
  • Batter Rule: If the sixth run scores before a batter completes the plate appearance, that batter leads off the next inning (0-0 count).
  • Unlimited Run Exception: The six-run limit is suspended in the last scheduled inning (5th for 8U, 6th for 9-12, 7th for 13-16) and all extra innings.
  • Curfew (No New Inning Start after):
  • April Games: 7:45 PM
  • May Games: 8:00 PM
  • June Games: 8:15 PM (Playoff cutoff is 8:30 PM)


  • Pre-Game Procedures and Forfeiture
  • Forfeiture: A team must field at least eight players. Failure to do so 15 minutes after the official start time results in forfeiture.
  • Practice Times (6 PM Weekday Games): Visitors (5:20-5:40 PM); Home (5:40-6:00 PM).
  • Benches: Home Team occupies the third base bench.


  • Postponements and Make-up Games
  • Interrupted Games: Games terminated before becoming official will be continued from the point of termination.
  • Make-up Game Curfew: Make-up games cannot exceed two hours (no batter after two hours).
  • 13-16 League Exception: The 2-hour curfew does not apply to 13-16 League make-up games.
  • Priority: Make-up games take priority over scheduled practices.


  • Equipment and Uniforms
  • Uniforms and Attire
  • Required: Players must wear the full issued uniform (shirt, cap, socks) to play. Shorts are not permitted.
  • Protective Equipment (Mandatory)
  • Helmets: NOCSAE certified helmets are required when batting and running the bases.
  • Catchers: Must wear athletic supporter, protective cup, mask/helmet, shin guards, and chest protector while catching or warming up pitchers.
  • Bat, Glove, and Spike Regulations
  • Bat Size and Composition
  • 8-Prep, 9-10 & 11-12
  • Size: 2 ⅝ inch max barrel size
  • No composite barrels
  • 13-16 League
  • Must meet LL/NFHS standards. NFHS compliant bats may be composite.
  • Spikes: No metal spikes are allowed in any league.


  • Player Participation and Rules
  • Defensive Participation
  • Sitting Rule: No player sits consecutive innings, and no player sits more than one inning until all others have sat at least one inning. Penalty: Game forfeiture.
  • Substitution: Free defensive substitution is permitted.
  • Playing Up (Younger Players)
  • Consent: Requires parent/guardian consent each time the player plays up.
  • Position Restriction: May play only the outfield. May not pitch.
  • Nine-Player Fill-In Limits: A brought-up player has limits: bat last, play only outfield, max 3 defensive innings, max 1 at-bat.
  • Pitching Rules
  • Limit: Max three (3) innings pitched per player per calendar day.
  • Max two pitching turns per game.
  • Counts as a turn after the 1st pitch thrown.
  • If a manager or coach removes a pitcher from the game, he may remain in the game at another position. If a player is removed from pitching before having played in the game at least three innings, he cannot pitch again until at least three innings are completed.
  • Hit Batters: Two in one inning, or three in one game: pitcher must be removed.


  • Base Running and League Specific Rules
  • Bunting
  • 8-Prep & 9-10 - Not permitted
  • 11-12 & 13-16 - Permitted
  • Stealing / Leading
  • 8-Prep & 9-10 No stealing or leading off. No advancement on wild pitch
  • 11-12 - may advance once balls crosses plate
  • 13-16 - standard NFHS rules apply
  • Dropped third strike
  • 8-Prep, 9-10 & 11-12 - not permitted
  • 13-16 - permitted
  • Infield Fly Rule
  • 8-Prep & 9-10 - Does not apply
  • 11-12 & 13-16 - Rules apply
  • All-Star Games
  • All-Star Game Rules
  • Player Selection: Minimum two players per team. Players must have played in at least half of their team's games.
  • Playing Time: Must play the first 4.5 or the last 4.5 innings and no more, unless covering a missing/injured player.
  • 13-16 League Exception: Identified players may play the entire game with Commissioner approval.
  • Pitching: Max two innings per player.
  • Ties: If tied after nine innings, the game ends in a tie.


  • Administration and Conduct
  • Sportsmanship and Conduct
  • Time Out: Only Managers and Coaches may request time out.
  • Base Coaches: Any player coaching a base must wear a protective batting helmet.
  • Prohibited Conduct: No smoking on the field by Managers/Coaches. Only Managers/Coaches may address the Umpire.
  • The addressing of remarks by Managers and Coaches to players of opposing teams is prohibited.


  • Protests and Post-Game
  • Protest Procedure: Only decisions regarding rules interpretation may be protested. Contact League Commissioner within 24 hours of game to register protest.
  • Reporting: Managers report the final score and umpire ratings via the Game Submission form.



  • Playoffs and Championships
  • League Winner: Team with the best regular season winning percentage.
  • Game Length: Must be at least six innings (seven innings in 13-16 League). Suspended games are continued from the point of suspension.


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